Method for producing revolving parts

Claim 1

A method for producing revolving parts, such as, sprockets, gears and pulleys, including a metallic annular member (16) mounted on an antifriction bearing of a desired thickness, comprising the steps of: a. forming said metallic annular member with a plurality of notches (17) or through holes in the inner periphery thereof and with such an inner diameter as to be closely fitted on the outer race (13); b. forming the outer race (13) of said bearing with engaging means in the outer periphery thereof; c. mounting said metallic annular member (16) on the outer race (13) of said bearing; d. setting said annular member (16) with a bearing (11) therein in a mold and injecting a thermo plastic resin thereinto to secure said annular member (16) to the outer race (13) by filling the engaging means (15); and, e. forming an annular boss (19) of synthetic resin material at each side of said annular member on the outer periphery of the outer race (13) to secure said annular member to the outer race, whereby said bosses (19) are formed integral with each other through said notches (17) or through holes and said engaging means (15) serving to make said annular member integral with the outer race.

Claim 2

A method for producing revolving parts, such as, sprockets, gears and pulleys, including a metallic annular member (16) mounted on an antifriction bearing of a desired thickness, comprising the steps of: a. forming said metallic annular member with a plurality of notches (17) or through holes in the inner periphery thereof and with such an inner diameter as to be closely fitted on the outer race (13); b. forming the outer race (13) of said bearing with engaging means in the outer periphery thereof; c. mounting said metallic annular member (16) on the outer race (13) of said bearing; d. setting said annular member (16) with a bearing (11) therein in a mold and injecting a thermo plastic resin thereinto to secure said annular member (16) to the outer race (13) by filling the engaging means (15); and, e. forming an annular boss (19) of synthetic resin material at each side of said annular member on the outer periphery of the outer race (13) to secure said annular member to the outer race, whereby said bosses (19) are formed integral with each other through said notches (17) or through holes and said engaging means (15) serving to make said annular member integral with the outer race.